caa a22 4500 46903534X CHVBK 20180323132754.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF01017342 doi (NATIONALLICENCE)springer-10.1007/BF01017342 Chan Minh Tien, aut Electron-phonon superconductivity mechanisms in the Hubbard model [Elektronische Daten] [Minh Tien, Chan] An electron-phonon pairing mechanism in the Hubbard model on a square lattice is considered. The method of two-time Green's functions is used to calculate the critical temperature of the superconducting transition. The limiting caseU→∞ is considered, and expressions are obtained for the dependences on the concentration of particles of the temperatures of the superconducting and Peierls transitions and the exponent of the isotopic effect. It is shown that the inclusion of Coulomb correlations leads to a displacement of the Van Hove singularity in the quasiparticle spectrum and to a change in the dependences of the isotopic effect and the temperatures of the superconducting and Peierls transitions on the carrier concentration compared with an ordinary Fermi system. Plenum Publishing Corporation, 1993 Theoretical and Mathematical Physics Kluwer Academic Publishers-Plenum Publishers 91/3(1992-06-01), 650-657 0040-5779 91:3<650 1992 91 11232 https://doi.org/10.1007/BF01017342 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01017342 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Chan Minh Tien aut NATIONALLICENCE 773 0- Theoretical and Mathematical Physics Kluwer Academic Publishers-Plenum Publishers 91/3(1992-06-01), 650-657 0040-5779 91:3<650 1992 91 11232 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer